Good Morning

Question

Good Morning I have a garmin nuvi 660 purchased a year ago. I love the GPS but recently when I set a destination it said "not enough memory" . The problem got progressivly worse until now it only turns on and gets to the disclaimer screen. Problem is that it wont accept when you touch the "agree", and wont go off that screen now so its pretty much usless. I have asked around and someone told me that i need to download a new map? thankyou